This specification provides the definition of the Reservation request - interactive message (RESREQ) to be used in Electronic Data Interchange (EDI) between trading partners involved in administration, commerce and transport.

An interactive Travel, Tourism and Leisure Reservations Request is sent by a customer or his agent, to a service provider to reserve, modify or cancel a Travel, Tourism and Leisure service. The Travel, Tourism and Leisure Reservation Response

Interactive message (RESRSP) is utilised to provide an interactive response to the interactive service request.

The Reservation request - interactive message may be used for both national and international applications. It is based on universal practice related to administration, commerce and transport, and is not dependent on the type of business or industry.

A segment providing data pertaining to the originator of the interactive processing request (i.e. travel agent identity and location and the commercial computer reservations system delivering the message).

Personal details pertaining to a unique traveller and associated to the preceding product or service information (i.e. surname, given name, indication that traveller is accompanied by non ticketed infant, etc.).

Like Segment Group 7, this segment group provides information pertaining to Travel, Tourism and Leisure (TT&L) product or service. However, in certain situations product or service data must be grouped as part of an overall TT&L journey. Segment group 15 provides that grouping capability.